A few tiny genetic changes help naked mole-rats repair their DNA and live far longer than other mammals. The discovery could reveal how evolution engineered nature’s longest-lived rodent. Credit: AI/ScienceDaily.com Scientists believe that the remarkable longevity of naked mole-rats may be tied to subtle changes in just four amino acids. A recent study found that small evolutionary mutations in cGAS -- an enzyme in the innate immune system that detects DNA and triggers immune defenses -- could

Tag-uri: DNA